Weird electrics problem

Stag>75 · 18th July 2014, 12:23

2001 R75 2.5: Today I opened the door and sat in the car to find the radio on. But I was holding the keys in my hand. So I inserted the key into the ignition, turning on then off and the radio went off.

I actually forgot about until I was about to park it later today and I noticed the drivers side reading light was on but I hadn't put i on (Unless I somehow accidentally pressed it - but I think not)

I know this happened, it was not a dream. Anyone have an idea what has happened?

berkshirelad · 18th July 2014, 12:33

Sounds to me as though the first step is a battery reset...

First_damned · 18th July 2014, 12:46

Then check the plenum and signs of a wet ecu

klarzy · 18th July 2014, 12:50

Quote:

Originally Posted by First_damned

Then check the plenum and signs of a wet ecu

should not be an issue on a petrol...

I agree with 30 min battery reset

T-Cut · 18th July 2014, 18:01

Quote:

Originally Posted by klarzy

should not be an issue on a petrol...

Petrol ECUs tend not to become water damaged like the diesel's, but submerge it and all manner of electrical gremlins are let loose.

TC

klarzy · 18th July 2014, 18:11

Quote:

Originally Posted by T-Cut

Petrol ECUs tend not to become water damaged like the diesel's, but submerge it and all manner of electrical gremlins are let loose.

TC

I do know that the petrol ones are sealed and less problematic... the diesels are open in the corners to allow air in for the barometric pressure sensor....
But why does this need to be an issue? surely you can seal up the bottom 2 and one of the top corners, put a small piece of 5mm airline in as a snorkel which would allow the internal pressure to change quite nicely and not have to worry about damp ingress again...

check your drains every now and again and you are laughing...

Stag>75 · 23rd July 2015, 08:28

I'm putting this into my original thread because I am wondering if it is related. Tonight my car was sitting in the driveway and my wife informed me that my right tail light was on and when I went out I found that my right headlight was also on. I opened the car, turned the lights on and off but it made no difference. I have now disconnected the battery to see what happens.

Any suggestions from anyone as to what this has been caused by?

Steve42 · 23rd July 2015, 08:34

did you check if your right indicator was down.
may have been you parking lights left on.
one side light and one tail light .
just a thought

Stag>75 · 23rd July 2015, 08:46

Quote:

Originally Posted by Steve42

did you check if your right indicator was down.
may have been you parking lights left on.
one side light and one tail light .
just a thought

Definitely the red tail light.

I have just tried to reconnect the battery and the alarm blows. Cannot seem to stop it. What's going on??????

Steve42 · 23rd July 2015, 08:56

alarm may go off when you put the battery back on.
unlock the car with the key. should stop the alarm going off.

you did say that the front and back light was on but just on one side.
that sounds to me like you had left the car with your parking lights on.

18th July 2014, 12:23	#1
Stag>75 Gets stuck in Rover 75 Saloon 2.5 Join Date: Jul 2012 Location: Melbourne Posts: 563 Thanks: 52 Thanked 96 Times in 80 Posts	Weird electrics problem 2001 R75 2.5: Today I opened the door and sat in the car to find the radio on. But I was holding the keys in my hand. So I inserted the key into the ignition, turning on then off and the radio went off. I actually forgot about until I was about to park it later today and I noticed the drivers side reading light was on but I hadn't put i on (Unless I somehow accidentally pressed it - but I think not) I know this happened, it was not a dream. Anyone have an idea what has happened?

23rd July 2015, 08:28	#7
Stag>75 Gets stuck in Rover 75 Saloon 2.5 Join Date: Jul 2012 Location: Melbourne Posts: 563 Thanks: 52 Thanked 96 Times in 80 Posts	One headlight and tail light on I'm putting this into my original thread because I am wondering if it is related. Tonight my car was sitting in the driveway and my wife informed me that my right tail light was on and when I went out I found that my right headlight was also on. I opened the car, turned the lights on and off but it made no difference. I have now disconnected the battery to see what happens. Any suggestions from anyone as to what this has been caused by?

18th July 2014, 12:33	#2
berkshirelad Gets stuck in Rover 75 Tourer Connoisseur SE Join Date: Jan 2012 Location: Newbury Posts: 836 Thanks: 9 Thanked 101 Times in 91 Posts	Sounds to me as though the first step is a battery reset...

18th July 2014, 12:46	#3
First_damned Posted a thing or two Rover 75 Connoisseur CDTi Join Date: Aug 2013 Location: Birmingham Posts: 1,272 Thanks: 267 Thanked 100 Times in 93 Posts	Then check the plenum and signs of a wet ecu

23rd July 2015, 08:34	#8
Steve42 I really should get out more....... mg 190+ Join Date: Feb 2013 Location: Bedworth Posts: 2,267 Thanks: 191 Thanked 368 Times in 248 Posts	did you check if your right indicator was down. may have been you parking lights left on. one side light and one tail light . just a thought

23rd July 2015, 08:56	#10
Steve42 I really should get out more....... mg 190+ Join Date: Feb 2013 Location: Bedworth Posts: 2,267 Thanks: 191 Thanked 368 Times in 248 Posts	alarm may go off when you put the battery back on. unlock the car with the key. should stop the alarm going off. you did say that the front and back light was on but just on one side. that sounds to me like you had left the car with your parking lights on.